MONDO_0015073 (gallbladder neuroendocrine tumor, grade 1/2) is a well differentiated, low or intermediate grade tumor with neuroendocrine differentiation that arises from the gallbladder. Also known as: gallbladder NET, gallbladder neuroendocrine tumor, gallbladder neuroendocrine tumour, gallbladder well differentiated endocrine tumor, gallbladder well differentiated endocrine tumor/carcinoma, gallbladder well differentiated endocrine tumour.